As the OEM POH/AFM were, for all examined, more restrictive than the DCA books
Some differences were due to differences in rules, eg the 500S GW change. In general, though, I think I have to continue to disagree with your overall assessment. I thought the local product generally was pretty reasonable for operational use. Perhaps we should just agree to disagree ?
He made pretty nice violins as well.
Learn something new every day. A talented chap, indeed.